In this paper, the dependencies of density (ρ), surface tension (σ), and average wetting angles on temperature were investigated at three Fe - C - Cr model alloys where chromium content ranged from 0.92 to 4.76 wt%. All measurements were performed by sessile drop technique in a resistance furnace at temperatures from melting point up to 1600 °C. The effect of chromium, oxygen, and sulfur on the values of the abovementioned quantities was found. The temperature coefficient of surface tension dσ/dT was positive for all liquid metal samples due to the influence of surface active elements. The surface tension and average wetting angles raised with increasing chromium content. All obtained data were statistically evaluated with a satisfactory result.Keywords: Surface properties, Fe - C - Cr model alloys, chromium, alumina, sessile drop method
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